Speaker Setup; Custom Speaker Setups; Determining Crossover Points - Lexicon MC-4 User Manual

SETUP

SPEAKER SETUP

SETUP SPEAKERS SPEAKER SETUP
Selecting the SETUP menu SPEAKERS option opens the SPEAKER SETUP, which can be used to configure the audio output connectors for the
desired speaker setup, set speaker distances and calibrate output levels. The MC-4 has eight audio output connectors labeled Front L/R,
Center, Subwoofer, Side L/R and Rear L/R.
MAIN MENU
MODE ADJUST
AUDIO CONTROLS
SETUP
SETUP

CUSTOM SPEAKER SETUPS

SETUP SPEAKERS CUSTOM SETUP
Selecting the SPEAKER SETUP menu CUSTOM SETUP option opens
the CUSTOM SETUP menu, which can be used to configure the
audio output connectors for a custom speaker setup. The
CUSTOM SETUP menu allows the selection of independent
crossover points for each audio output connector.

Determining Crossover Points

The CUSTOM SETUP menu allows independent crossover points
to be assigned for each audio output connector. Crossover points
can be selected in 10Hz increments within a 30Hz–120Hz range.
With the exception of THX 80Hz, all crossover points activate a
24dB per-octave filter. The graphs on the next page indicate the
frequency response of these crossover points.
3-24
SETUP SPEAKER SETUP
CUSTOM SETUP CUSTOM SETUP
INPUTS
SPEAKERS SPEAKERS THX SETUP
REAR PANEL CONFIG SPEAKER DISTANCES
LEVELS CALIBRATION
DISPLAYS
VOLUME CONTROLS
TRIGGER
40Hz
LOCK OPTIONS
60Hz
M
SUB
40Hz 40Hz
The THX 80Hz crossover point activates a 12dB per-octave filter
for the audio output connectors labeled Front L/R, Center, Side
L/R and Rear L/R and a 24dB per-octave filter for the audio output
connector labeled Subwoofer.
For each audio output connector, select the crossover point closest
to the low-frequency rating of the associated loudspeaker. For the
output connector labeled Subwoofer, select the crossover point
equal to the lowest crossover point of the other loudspeakers.
CUSTOM SETUP
FRONT L/R
CENTER
SIDE L/R
REAR L/R
SUBWOOFER
R SR RR
THX ULTRA2 SUB
60Hz 60Hz
BGC
C ASA APART
L SL RL
60Hz 60Hz
Lexicon
40Hz
60Hz
60Hz
60Hz
40Hz
OFF
N/A